I am trying to spend wisely and I am anticipating one day to buy a Canon 16-35 L lens that has an 82mm diameter lens. At the moment all my lenses are 77mm diameter (Canon 28-70mm, 70-200mm) and I am considering getting a variable ND filter.

I was thinking of buying an 82mm size nd filter, that way I can use it for my other lenses using a step up ring, but I am wondering if it will bring vignetting issues.

Anyone tried it this way before and what are their results.

I checked it with the lens hood space, and theres plenty of room for an 82mm filter.